Manufacturing of hollow tile and the like



APPLICATION FILED OCT-28, 191'8.

Patented Aug. 10, 1920.

UHIUUUU U uUUUHIHIUDm UDHUDUUUQ UDUUUUUDN UUUUDUUU UUUHUUDDDM UUUUDUUUQ UNITED- STATES PATENT OFFICE.

FRANK DOCHNAL, ST. LOUIS, MISSOURI.

MANUFACTURING 0]? HOLLOW TILE AND THE LIKE.

f Application filed October 28, 1918. Serial No. 259,921.

T 0 all whom it may concern:

Be it known that I, FRANK DOCHNAL, a citizen of the United States, residing in the city of St. Louis and State of Missouri, have invented certain new and useful Impr vements in the l/lanufacturing of Hollow Tile and the like, of which the followlng is a specification.

My invention relates to the manufacture of hollow tile and the like, by means of machines adapted to press or force the soft clay through forming dies to give the tile the proper shape, and more particularly the invention relates to rotatable rneans for perforating and groovin a wall or walls of a hollow building tile for wall structures, building tile for partitions, or building copings and the like.

One object of perforating and grooving the body of a tile is to permit the ends of the tile to be easily removed after burning, where it is desired to use open ended tile.

A further object of the invention is to provide one or more walls of the tile with perforations so that the tile may be used for partitions to which plaster may be applied and adhere.

A further object of the invention is to position the perforating or grooving means adjacent the mouth of a die and in the path of travel of the tile leaving the die so that the forward movement of the tile will impart a rotary movement to the perforating and grooving means.

My invention will be more readily understood by reference to the accompanying drawings, forming a part of this specification, and in which:

Figure 1, is a front elevation of a forming die showing my invention applied thereto.

Fig. 2, is a top plan view thereof, with portions broken away and showing the clay being forced through the die for shaping it into hollow tile.

Fig. 3, is an end elevation of a hollow tile after it has been formed, showing one of the end walls provided with a plurality of lines of alternate perforations and grooves to permit the end walls of the tile being easily broken out or removed when open ended tile is desired.

Fig. l, is a sectional view of one end of a tile taken through the perforations and grooves.

Fig. 5, is a fragmentary end view of a tile showin a part of one of the end walls broken away.

Fig. 6, is a side elevation of a partition tile showing one of its walls provided with a multiplicity of perforations or openings which will permit plaster to enter the openings and adhere to the tile.

Referring to the accompanying drawings the reference character 1 designates a suitable clay receiving die-while 2 designates the forming head thereof. 3 represents the soft clay, e the plunge for forcing the clay through the forming die and 5 a part of the formed tile as it is leaving the forming die.

In carrying out the aim of my invention, I employ a plurality of perforating and grooving elements having the hub portions 6. r The periphery of each hub is adapted to contact with the outer face of the tile to assist in setting the perforating and gr0oving elements into motion. These elements are each rotatably mounted upon a suitable bracket 7, preferably, although not necessarily supported by the forming die.

In the drawings, I have shown for convenience only, three rotary elements on each side of the forming die 2 and each element is provided with a plurality of relatively long radial extending perforating arms 8 and intermediate each pair of arms 8 a relatively short groove forming arm 9.

It is obvious that the moving clay tile will impart a rotary movement to the elements 6 as the tile is pushed forward and that the arms 8 and 9 of each element 6 will perform its duty of perforating and grooving the end walls of the tile. The end wall or walls of a tile, so perforated and grooved may be easily removed, or broken out by a slight tap with a hammer or other tool. Open end tile must have some means to prevent the side walls of the tile from warping while being burnt, thus providing the tile initially with end walls which are provided with a plurality of lines of perforations 10 y and grooves 11, alternately arranged, permits the end walls to be easily and quickly removed after being burnt, as is manifest.

It will be here understood, that I may provide the face or faces of a tile with a line, or lines of perforations 10 only, if so desired, and omit the grooves 11, or vice versa. It will also be understood that for partition tile designated 12, as shown in Fig.

5, I may provide one or more walls with a multiplicity of perforations or openings '13 through which plaster may pass in order completely through'the wall of the tile, as

is manifest, and, where grooves only are desired the short arms 9 only, are used on the rotary elements 6.

If desired, the rotary perforating or grooving elements may be power driven at.

' aspeed to correspond to the travel of the tile being formed. 7 I

The perforations, or grooves, or both, may be formed in the wall or walls of a tile in straight lines, staggered or in any other manner desired. The perforations may be of any size, or shape, likewise the grooves.

It will be'understood that as many rotary elements 6 may-be employed, as desired, and

that one or all four walls of a tile may be perforated or is manifest.

The many advantages of the herein degrooved at the same time, as

scribed invention will readily suggestthemit app'ertains.

I do not desire to be understood as limiting myself to the details of construction and arrangement as herein described and illustrated, as it is manifest that variations and modifications may be made in the features of construction and arrangement in the adaptation of the device to various conditions of use without departing from the spirit and scope of my invention and the terms of the following claim, hence wish it to be understood that I reserve the right to make any such changes or modifications as may selves to those skilled in the art to which fairly fall within the scope of the appended claim when fairly construed WVhat I claim is:

The combination, with a tile forming die, of a rotary perforating and grooving means adapted to be set in motion by the tile leaving the forming die comprising radially eX- tending arms perforating means, radially extending grooving means and a hub arranged on each side of said perforating and grooving means adapted forperipheral contact with the tile leaving the forming die.

In testimony whereof, I have hereunto signed my name to the specification.

' FRANK DOCHNAL. 

